Brush.



PatentedfApr. 24, |900. F. G. FARNHAM.

BRUSH. (Application led Dec. 13, 1898.5

2 Sheets-Sheet l.

(No Model.)

Patented Apr, 24,1900.'- F. G. FARNHAM.-

B R U S H (Application led Dec. 13, 1898.)

(No Model.)

2 Sheets-#Sheet 2.

v ffy/0? Ens co,. PHoaLlTHo.. wAsnm NTED STATES l Farc PATENTA BRUSH.

SPECIFICATION forming part of Letters Patent NO. 648,166, dated April 24, 1900.

Application filed December 13, 1898. Serial No. 699,151. (No model.)

To @ZZ whom it ntctg/ concern.-

-Be it known that I, FRANK GUNN FARN- HAM, a citizen of the United' States, residing at I-Ionesdale, Wayne county, Pennsylvania, have invented certain new and useful Improvements in Brushes, of which the following is a specication.

My invention relates to what are known as wheel-brushes, adapted for the polishing of metals, glass, duc.

The invention made the subject of this present case is an improvement on the form of a .brush shown in an application filed by me March 19, 1898, Serial No. 674,508, and is designed particularly to improve the details of construction of that brush.

In the application above referred to my principal form shows a two-part core made up preferably of veneered sectionsl glued together, these cores being carried by a hub and the cores in turn carrying outer veneer rings, which are adapted to bear against the bers or brush material, this material being` laid in layers with interposing rings dividing the layers. In the smallersizes of brushes in particular I find it important to change the form of the cores and make them in the shape of a sleeve with an enlargement or shoulder, the outer disk fitting upon the sleeve `part, and against the shoulder, which acts as a su pport for the disk in one direction. After the disk is fitted and glued to the small extension of the sleeve and against the shoulder I pin a metal ferrule on the smaller part of the sleeve, which prevents it from splitting when screwing onto a taper spindle and assists in keeping the disk in place. In some cases instead of the sleeve and ferrule I make the sleeve of metal and dispense with a ferrule.

In the accompanying drawings, Figure 1 is a sectional view showing a completed brush on the right and partly completed on the left. Fig. 2 is a plan view of the same. Fig. 3 is a plain ferrule. Fig. 4 is a detail View of the metal sleeve. Fig. 5 is a cross-section of a completed brush on one side only, the construction being slightly modified. Fig. 6 is a perspective View of a sleeve. Figs. 7 to 1l are sectional views ofa number of modifications, showing different arrangements of the outer disks, sleeves, and the ferrule.

Referring to Fig. 1, a is a central hub, and b a bushing, the outer and inner diameters varying as necessity requires'.

c is a metal sleeve with a flange s at one end for supporting the disk d and adapted to lit on the hub a.

E is'ananchor and at the same time a spacing-ring and has a hole the same diameter as the hub a, and its outer diameter is the samelaid on in layers but it is so laid that o pen A spaces g g are left between the butts and hub a.A The effect of this is to allow for bal= ancing the brush, which I do by running in hot-lead through the openingo or by removing hub ct after the brush is seasoned, then balancing by the use of the lead, and then replacing the hub. The sleeves c c are put on in inishingafterthe brush is seasoned. They are forced down upon the disks d d and secured by prick-punching or nailing through into hub a., f

The disks d are preferably made up of odd layers of veneers glued together to prevent warping, and since hot glue when applied in laying the fiber has a tendency to make the layers loosen from each other I provide against this by clench-nailin g aro und the edge of the disks, as at m m, Fig. 2. In Fig. 5 I show a brushhaving a construction somewhat similar, excepting that I use a Wooden sleeve C/ instead of the metal sleeve of Fig. l and with it a straight ferrule T, Fig. 3. y also the `flange s may be covered by the disk d. In Fig. 5 I also show a bushing which has its hole tapering to the center from both ends, as at P, to allow the bushing to be reversed When worn beveling on one side in some kinds of work. The sleeve C', Fig. 5,

is glued to the hub and the bushing is glued in last.v

Fig. 6 is a perspective of a sleeve prefer In this case roo ably turned from wood; but it may be made from other material or compressed freni Woodnlp.

p The metal sleeve shown in Fig. l is adapted for very small sizes of brushes, as in soine cases the fiange s on sleeve C', Fig. 5, would not permit the two sections to conie close enough together when only one or two layers of ber are used for a thin brush. In order to secure a flush face to either of the brushes shown in Fig. l or Fig. 5, the hub may be eut oft iiush with the faces of the disks d d, in particular for straight spindles. The brush shown in Fig. l, however, would be weakened to such a degree that the gluingsurface would not be sufcient to make a strong connection. I secure the desired result in such cases by increasing the thickness of the disk d at the hub, as at tu, Fig. 7, which shows added thickness applied to the disks d on the outside.

When a brush is so small-say three inches in diameter-that a bushing cannot be used, the hub acts as a bushing, or rather there is no bushing, as shown in Fig. S. It is not necessary to use the rings or anchors E E all the way through the layers of fiber.

' There thin brushes are used, I may use a sleeve reversed in position, as at 1, Fig. 9, or I may use a metal sleeve 2, Fig. 10, with the hub 3 acting as a core, or, as in Fig. 11, I may use a simple annularwasher around the end of the hub, as at 4.

What I claim isl. In a brush, a tubular hub, outer disks, brush fibers glued between the disks and a iianged sleeve iitted to each end of the hub, the ange being in contact with the outer disks While the sleeve encircles the hub, substantially as described.

2. A brush comprising a tubular Wooden hub, outer disks, layers of liber glued between the disks and metal-flanged sleeves fitted to the hub at each end, the flanges engaging the outer disks, substantially as described. v

3. In a brush, a hub, outer disks, brush iibers between the disks and a balancing-dlling between the disks, substantially as described.

In testimony whereof I afx my signature in presence of two Witnesses.

FRANK GUNN FARNI-IAM. lVitnesses:

ROBT. A. SMITH, N. E. BIGELOW. 

